faster, cheaper (pick two): improve CI workflow and switch to free github runner (#5702)

Co-authored-by: Douwe Osinga <douwe@block.xyz>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

.github/workflows/ci.yml

@@ -1,3 +1,5 @@
+name: CI
+
 on:
   push:
     branches:
@@ -10,8 +12,6 @@ on:
       - main
   workflow_dispatch:
 
-name: CI
-
 jobs:
   changes:
     runs-on: ubuntu-latest
@@ -41,23 +41,21 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
 
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+
       - name: Run cargo fmt
-        run: source ./bin/activate-hermit && cargo fmt --check
+        run: cargo fmt --check
 
   rust-build-and-test:
     name: Build and Test Rust Project
-    runs-on: goose
+    runs-on: ubuntu-latest
     needs: changes
     if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
     steps:
       - name: Checkout Code
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
 
-      - name: Activate hermit and set CARGO_HOME
-        run: |
-          source bin/activate-hermit
-          echo "CARGO_HOME=$CARGO_HOME" >> $GITHUB_ENV
-          echo "RUSTUP_HOME=$RUSTUP_HOME" >> $GITHUB_ENV
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
 
       - name: Install Dependencies
         run: |
@@ -65,32 +63,52 @@ jobs:
           sudo apt install -y libdbus-1-dev gnome-keyring libxcb1-dev
 
       - name: Cache Cargo artifacts
-        uses: actions/cache@2f8e54208210a422b2efd51efaa6bd6d7ca8920f # pin@v3
-        with:
-          path: |
-            ${{ env.CARGO_HOME }}/bin/
-            ${{ env.CARGO_HOME }}/registry/index/
-            ${{ env.CARGO_HOME }}/registry/cache/
-            ${{ env.CARGO_HOME }}/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-debug-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-debug-
+        uses: Swatinem/rust-cache@v2
 
       - name: Build and Test
         run: |
           gnome-keyring-daemon --components=secrets --daemonize --unlock <<< 'foobar'
-          source ../bin/activate-hermit
           export CARGO_INCREMENTAL=0
-          cargo test --jobs 2
+          cargo test -- --skip scenario_tests::scenarios::tests
+          cargo test --jobs 1 scenario_tests::scenarios::tests
         working-directory: crates
 
+
+  rust-lint:
+    name: Lint Rust Code
+    runs-on: ubuntu-latest
+    needs: changes
+    if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+
+      - uses: Swatinem/rust-cache@v2
+
       - name: Lint
         run: |
           source ./bin/activate-hermit
+          # use the non-hermit rust toolchain because the rust-cache action does not
+          # play nicely with hermit-managed rust
+          hermit uninstall rustup
           export CARGO_INCREMENTAL=0
           ./scripts/clippy-lint.sh
 
+  openapi-schema-check:
+    name: Check OpenAPI Schema is Up-to-Date
+    runs-on: ubuntu-latest
+    needs: changes
+    if: needs.changes.outputs.code == 'true' || github.event_name != 'pull_request'
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # pin@v4
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+
+      - name: Cache Cargo artifacts
+        uses: Swatinem/rust-cache@v2
+
       - name: Install Node.js Dependencies for OpenAPI Check
         run: source ../../bin/activate-hermit && npm ci
         working-directory: ui/desktop
@@ -98,6 +116,7 @@ jobs:
       - name: Check OpenAPI Schema is Up-to-Date
         run: |
           source ./bin/activate-hermit
+          hermit uninstall rustup
           just check-openapi-schema
 
   desktop-lint:
@@ -130,5 +149,3 @@ jobs:
       - name: Run Tests
         run: source ../../bin/activate-hermit && npm run test:run
         working-directory: ui/desktop
-
-